Hi Oscar, kernel test robot noticed the following build warnings: [auto build test WARNING on s390/features] [also build test WARNING on akpm-mm/mm-everything powerpc/next powerpc/fixes deller-parisc/for-next arnd-asm-generic/master linus/master v6.11-rc2 next-20240805] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Oscar-Salvador/mm-mmap-Teach-generic_get_unmapped_area-_topdown-to-handle-hugetlb-mappings/20240729-171449 base: https://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git features patch link: https://lore.kernel.org/r/20240729091018.2152-7-osalvador%40suse.de patch subject: [PATCH v2 6/9] mm: Make hugetlb mappings go through mm_get_unmapped_area_vmflags config: x86_64-randconfig-012-20240802 (https://download.01.org/0day-ci/archive/20240806/202408060456.yBmmX9hr-lkp@xxxxxxxxx/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240806/202408060456.yBmmX9hr-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202408060456.yBmmX9hr-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> arch/x86/mm/hugetlbpage.c:84:1: warning: no previous prototype for 'hugetlb_get_unmapped_area' [-Wmissing-prototypes] 84 | hugetlb_get_unmapped_area(struct file *file, unsigned long addr, | ^~~~~~~~~~~~~~~~~~~~~~~~~ vim +/hugetlb_get_unmapped_area +84 arch/x86/mm/hugetlbpage.c ^1da177e4c3f41 arch/i386/mm/hugetlbpage.c Linus Torvalds 2005-04-16 82 ^1da177e4c3f41 arch/i386/mm/hugetlbpage.c Linus Torvalds 2005-04-16 83 unsigned long ^1da177e4c3f41 arch/i386/mm/hugetlbpage.c Linus Torvalds 2005-04-16 @84 hugetlb_get_unmapped_area(struct file *file, unsigned long addr, ^1da177e4c3f41 arch/i386/mm/hugetlbpage.c Linus Torvalds 2005-04-16 85 unsigned long len, unsigned long pgoff, unsigned long flags) ^1da177e4c3f41 arch/i386/mm/hugetlbpage.c Linus Torvalds 2005-04-16 86 { 39c11e6c05b7fe arch/x86/mm/hugetlbpage.c Andi Kleen 2008-07-23 87 struct hstate *h = hstate_file(file); ^1da177e4c3f41 arch/i386/mm/hugetlbpage.c Linus Torvalds 2005-04-16 88 struct mm_struct *mm = current->mm; ^1da177e4c3f41 arch/i386/mm/hugetlbpage.c Linus Torvalds 2005-04-16 89 struct vm_area_struct *vma; ^1da177e4c3f41 arch/i386/mm/hugetlbpage.c Linus Torvalds 2005-04-16 90 39c11e6c05b7fe arch/x86/mm/hugetlbpage.c Andi Kleen 2008-07-23 91 if (len & ~huge_page_mask(h)) ^1da177e4c3f41 arch/i386/mm/hugetlbpage.c Linus Torvalds 2005-04-16 92 return -EINVAL; 44b04912fa7248 arch/x86/mm/hugetlbpage.c Kirill A. Shutemov 2017-07-17 93 ^1da177e4c3f41 arch/i386/mm/hugetlbpage.c Linus Torvalds 2005-04-16 94 if (len > TASK_SIZE) ^1da177e4c3f41 arch/i386/mm/hugetlbpage.c Linus Torvalds 2005-04-16 95 return -ENOMEM; ^1da177e4c3f41 arch/i386/mm/hugetlbpage.c Linus Torvalds 2005-04-16 96 1e0f25dbf2464d arch/x86/mm/hugetlbpage.c Kirill A. Shutemov 2017-11-15 97 /* No address checking. See comment at mmap_address_hint_valid() */ 5a8130f2b186ac arch/i386/mm/hugetlbpage.c Benjamin Herrenschmidt 2007-05-06 98 if (flags & MAP_FIXED) { a5516438959d90 arch/x86/mm/hugetlbpage.c Andi Kleen 2008-07-23 99 if (prepare_hugepage_range(file, addr, len)) 5a8130f2b186ac arch/i386/mm/hugetlbpage.c Benjamin Herrenschmidt 2007-05-06 100 return -EINVAL; 5a8130f2b186ac arch/i386/mm/hugetlbpage.c Benjamin Herrenschmidt 2007-05-06 101 return addr; 5a8130f2b186ac arch/i386/mm/hugetlbpage.c Benjamin Herrenschmidt 2007-05-06 102 } 5a8130f2b186ac arch/i386/mm/hugetlbpage.c Benjamin Herrenschmidt 2007-05-06 103 ^1da177e4c3f41 arch/i386/mm/hugetlbpage.c Linus Torvalds 2005-04-16 104 if (addr) { 1e0f25dbf2464d arch/x86/mm/hugetlbpage.c Kirill A. Shutemov 2017-11-15 105 addr &= huge_page_mask(h); 1e0f25dbf2464d arch/x86/mm/hugetlbpage.c Kirill A. Shutemov 2017-11-15 106 if (!mmap_address_hint_valid(addr, len)) 1e0f25dbf2464d arch/x86/mm/hugetlbpage.c Kirill A. Shutemov 2017-11-15 107 goto get_unmapped_area; 1e0f25dbf2464d arch/x86/mm/hugetlbpage.c Kirill A. Shutemov 2017-11-15 108 ^1da177e4c3f41 arch/i386/mm/hugetlbpage.c Linus Torvalds 2005-04-16 109 vma = find_vma(mm, addr); 1e0f25dbf2464d arch/x86/mm/hugetlbpage.c Kirill A. Shutemov 2017-11-15 110 if (!vma || addr + len <= vm_start_gap(vma)) ^1da177e4c3f41 arch/i386/mm/hugetlbpage.c Linus Torvalds 2005-04-16 111 return addr; ^1da177e4c3f41 arch/i386/mm/hugetlbpage.c Linus Torvalds 2005-04-16 112 } 1e0f25dbf2464d arch/x86/mm/hugetlbpage.c Kirill A. Shutemov 2017-11-15 113 1e0f25dbf2464d arch/x86/mm/hugetlbpage.c Kirill A. Shutemov 2017-11-15 114 get_unmapped_area: 529ce23a764f25 arch/x86/mm/hugetlbpage.c Rick Edgecombe 2024-03-25 115 if (!test_bit(MMF_TOPDOWN, &mm->flags)) ^1da177e4c3f41 arch/i386/mm/hugetlbpage.c Linus Torvalds 2005-04-16 116 return hugetlb_get_unmapped_area_bottomup(file, addr, len, ^1da177e4c3f41 arch/i386/mm/hugetlbpage.c Linus Torvalds 2005-04-16 117 pgoff, flags); ^1da177e4c3f41 arch/i386/mm/hugetlbpage.c Linus Torvalds 2005-04-16 118 else ^1da177e4c3f41 arch/i386/mm/hugetlbpage.c Linus Torvalds 2005-04-16 119 return hugetlb_get_unmapped_area_topdown(file, addr, len, ^1da177e4c3f41 arch/i386/mm/hugetlbpage.c Linus Torvalds 2005-04-16 120 pgoff, flags); ^1da177e4c3f41 arch/i386/mm/hugetlbpage.c Linus Torvalds 2005-04-16 121 } fd8526ad14c182 arch/x86/mm/hugetlbpage.c Kirill A. Shutemov 2013-11-19 122 #endif /* CONFIG_HUGETLB_PAGE */ ^1da177e4c3f41 arch/i386/mm/hugetlbpage.c Linus Torvalds 2005-04-16 123 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
